Quasi-resonant Controller

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  • The L6565 is a current-mode primary controller IC, specifically designed to build offline Quasi-resonant ZVS (Zero Voltage Switching at switch turn-on) flyback converters.

    Quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers MOSFET's turn-on.
    Converter's power capability variations with the mains voltage are compensated by line voltage feedforward. At light load the device features a special function that automatically lowers the operating frequency still maintaining the operation as close to ZVS as possible. In addition to very low start-up and quiescent currents, this feature helps keep low the consumption from the mains at light load and be Blue Angel and Energy Star compliant.
    The IC includes also a disable function, an on-chip filter on current sense, an error amplifier with a precise reference voltage for primary regulation and an effective two-level overcurrent protection.

    Key Features

    • TV/MONITOR SMPS
    • BLUE ANGEL, ENERGY STAR, ENERGY 2000 COMPLIANT
    • DIGITAL CONSUMER
    • AC-DC ADAPTERS/CHARGERS
    • PRINTERS, FAX MACHINES, PHOTOCOPIERS AND SCANNERS
    • 1% PRECISION (@ Tj = 25˚C) INTERNAL REFERENCE VOLTAGE
    • DISABLE FUNCTION (ON/OFF CONTROL)
    • QUASI-RESONANT (QR) ZERO-VOLTAGE-SWITCHING (ZVS) TOPOLOGY
    • FREQUENCY FOLDBACK FOR OPTIMUM STANDBY EFFICIENCY
    • LINE FEED FORWARD TO DELIVER CONSTANT POWER vs. MAINS CHANGE
    • ULTRA-LOW START-UP (< 70µA) AND QUIESCENT CURRENT (< 3.5mA)
    • ±400mA TOTEM POLE GATE DRIVER WITH UVLO PULL-DOWN
    • PULSE-BY-PULSE & HICCUP-MODE OCP

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
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L6565D SO-8 Tube
Active
0.32 1000 EAR99 MOROCCO Check Availability

Distributor availability ofL6565D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1317 1 Order Now
RS COMPONENTS EUROPE 336 2 Order Now
ARROW EUROPE 1997 0 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 3111 1 Order Now
Farnell Element14 EUROPE 131 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

1317

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

336

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

1997

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3111

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

131

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Buy now
E-L6565N DIP-8 Tube
NRND
- - EAR99 - No availability of distributors reported, please contact our sales office
L6565N DIP-8 Tube
Active
0.32 1000 EAR99 MALAYSIA Check Availability

Distributor availability ofL6565N

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1089 1 Order Now
ARROW EUROPE 190 0 Order Now
MOUSER WORLDWIDE 2655 1 Order Now
Farnell Element14 EUROPE 184 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

1089

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

190

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2655

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

184

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Buy now
L6565DTR SO-8 Tape And Reel
Active
0.32 1000 EAR99 MOROCCO Check Availability

Distributor availability ofL6565DTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7662 1 Order Now
RS COMPONENTS EUROPE 295 1 Order Now
AVNET AMERICA 7500 0 Order Now
ARROW EUROPE 30000 0 Order Now
Newark Element14 AMERICA 600 0 Order Now
ARROW AMERICA 7500 2500 Order Now
MOUSER WORLDWIDE 11089 1 Order Now
Farnell Element14 EUROPE 431 1 Order Now
RUTRONIK EUROPE 5000 2500 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

7662

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

295

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

30000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

600

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

7500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

11089

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

431

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Buy now

L6565D

Package

SO-8

Packing Type

Tube

Unit Price (US$)

0.32*

Distributor availability ofL6565D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1317 1 Order Now
RS COMPONENTS EUROPE 336 2 Order Now
ARROW EUROPE 1997 0 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 3111 1 Order Now
Farnell Element14 EUROPE 131 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

1317

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

336

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

1997

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3111

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

131

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Marketing Status

Active

Unit Price (US$)

0.32

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MOROCCO

E-L6565N

Package

DIP-8

Packing Type

Tube

Unit Price (US$)

*

Marketing Status

NRND

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

L6565N

Package

DIP-8

Packing Type

Tube

Unit Price (US$)

0.32*

Distributor availability ofL6565N

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1089 1 Order Now
ARROW EUROPE 190 0 Order Now
MOUSER WORLDWIDE 2655 1 Order Now
Farnell Element14 EUROPE 184 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

1089

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

190

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

2655

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

184

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Marketing Status

Active

Unit Price (US$)

0.32

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L6565DTR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.32*

Distributor availability ofL6565DTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 7662 1 Order Now
RS COMPONENTS EUROPE 295 1 Order Now
AVNET AMERICA 7500 0 Order Now
ARROW EUROPE 30000 0 Order Now
Newark Element14 AMERICA 600 0 Order Now
ARROW AMERICA 7500 2500 Order Now
MOUSER WORLDWIDE 11089 1 Order Now
Farnell Element14 EUROPE 431 1 Order Now
RUTRONIK EUROPE 5000 2500 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

7662

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

295

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

7500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

30000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

600

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

7500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

11089

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

431

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Marketing Status

Active

Unit Price (US$)

0.32

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DS2176
      Quasi-resonant SMPS controller
      5.3
      249.87 KB
      PDF
      DS2176

      Quasi-resonant SMPS controller

    • Description Version Size Action
      AN2936
      10 W SMPS with HV power MOSFET and the L6565 for three-phase industrial applications
      1.1
      301.41 KB
      PDF
      AN2844
      15 W wide range SMPS for metering based on ESBT™ STC03DE220HV and L6565 PWM controller
      1.1
      1.44 MB
      PDF
      AN1376
      25W quasi-resonant flyback converter for set-top box application using the L6565
      2.2
      1.73 MB
      PDF
      AN1439
      30 W AC-DC adapter with the L6565 quasi-resonant PWM controller
      7.0
      301.08 KB
      PDF
      AN1326
      L6565 quasi-resonant controller
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      AN2487
      STEVAL-TSP001V1 power over Ethernet powered device demonstration board
      2.1
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      AN2528
      Very wide input voltage range 6 W SMPS for metering
      1.3
      855.08 KB
      PDF
      AN2936

      10 W SMPS with HV power MOSFET and the L6565 for three-phase industrial applications

      AN2844

      15 W wide range SMPS for metering based on ESBT™ STC03DE220HV and L6565 PWM controller

      AN1376

      25W quasi-resonant flyback converter for set-top box application using the L6565

      AN1439

      30 W AC-DC adapter with the L6565 quasi-resonant PWM controller

      AN1326

      L6565 quasi-resonant controller

      AN2487

      STEVAL-TSP001V1 power over Ethernet powered device demonstration board

      AN2528

      Very wide input voltage range 6 W SMPS for metering

    • Description Version Size Action
      DT0118
      A Procedure for Restoring Bootloader Functionality to the STNRG388A
      1.0
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      PDF
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Presentations & Training Material

    • Description Version Size Action
      Primary side regulation controllers portfolio
      1.1 MB
      PDF

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Publications and Collaterals

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
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      PDF
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      5.5 MB
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      Electric vehicle (EV) ecosystem

      Power Management Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
E-L6565N
NRND
DIP-8 Industrial Ecopack1
L6565D
Active
SO-8 Industrial Ecopack2 (**)
L6565DTR
Active
SO-8 Industrial Ecopack2 (**)
L6565N
Active
DIP-8 Industrial Ecopack2 (**)

E-L6565N

Package:

DIP-8

Material Declaration**:

Marketing Status

NRND

Package

DIP-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L6565D

Package:

SO-8

Material Declaration**:

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L6565DTR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

L6565N

Package:

DIP-8

Material Declaration**:

Marketing Status

Active

Package

DIP-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.